I am not aware of a way to disable the PS/2 port on a PXI controller -- you can disable the various Serial, Parallel, or USB ports, but not the PS/2 port. You can set it to not require a keyboard for bootup, however, and this is set in the BIOS Settings.
Doug M
Applications Engineer
National Instruments
For those unfamiliar with NBC's The Office, my icon is NOT a picture of me 🙂